/**
 * Copyright (C) 2001-2020 by RapidMiner and the contributors
 * 
 * Complete list of developers available at our web site:
 * 
 * http://rapidminer.com
 * 
 * This program is free software: you can redistribute it and/or modify it under the terms of the
 * GNU Affero General Public License as published by the Free Software Foundation, either version 3
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License along with this program.
 * If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.example.set;

/**
 * Creates partitions from ratio arrays. Subclasses might shuffle the examples before building the
 * partition or apply stratification. The delivered partitions consist of an array of integer values
 * with the same length as the given size. For each element the integer defines the number of the
 * partition for this element. Numbering starts with 0.
 * 
 * @author Ingo Mierswa
 */
public interface PartitionBuilder {

	/**
	 * Creates a partition from the given ratios. Size is the number of elements, i.e. the number of
	 * examples.
	 */
	public int[] createPartition(double[] ratio, int size);
}
